6. The Ruby Seadragon (Phyllopteryx dewysea)
Officially identified in 2015, the Ruby Seadragon dazzled scientists with its brilliant red coloration and deepwater habitat off the coast of Australia. Unlike the leafy and weedy seadragons found in shallower waters, this rare species thrives in the darker depths, where its color helps it blend in. Its discovery not only expanded our understanding of seadragon diversity, but also highlighted how much remains hidden in the ocean’s depths. Find more details at BBC News.